Comparison of various methods of restoring adhesion to recently bleached enamel.

Aim: This study compared the effectiveness of several techniques in restoring compromised bonding to recently bleached enamel.

Methods: Seventy-five healthy bovine incisors were divided into five groups (n = 15). Fifteen teeth (Group 1) remained intact, whereas 60 (Groups 2 to 5) underwent at-home bleaching with 16% carbamide peroxide.